发明名称 |
Resonator sensors employing piezoelectric benders for fluid property sensing |
摘要 |
Resonator sensors namely piezoelectric benders are used for sensing fluid viscosity and density. The benders are inserted into a liquid to be monitored. An input voltage is applied to the bender causing it to vibrate in the liquid at a resonant frequency. Output voltage amplitude or frequency are monitored to determine changes in viscosity and density, respectively. The device may be used as a liquid level sensor and to control alteration of the viscosity of the fluid as, for example, by connection with a supply of ink or solvent in an ink jet printing device.
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申请公布号 |
US6044694(A) |
申请公布日期 |
2000.04.04 |
申请号 |
US19960704116 |
申请日期 |
1996.08.28 |
申请人 |
VIDEOJET SYSTEMS INTERNATIONAL, INC. |
发明人 |
ANDERSON, PHILIP D.;RYBICKI, MICHAEL J. |
分类号 |
G01F23/28;B41J2/175;B41J2/195;G01F23/296;G01N9/00;G01N11/16;(IPC1-7):G01N11/16 |
主分类号 |
G01F23/28 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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